Improvement in sash-guide blocks



A1tht1-tml1 ,5mm @stent 1 @ffice e f ALFRED BICKNELL, OF SOUTH READING, IMASACHUSETTS- ,y Letters Patent No. 83,685, dated November 3, 11868./y

IMPROVEMENT IN SASH-G-TJ'IDE BLOCKS.

` #wo- The Schedule refene. to in these Letters `Patent: and making part of the same 'n To all whomtt may concern or notches formed in them, fitting upon shoulders or Be it known that l, ALFRED BICKNELL, of South 101181105 1111111011111 1110 01151115 Bl, 115 51101111 111 1185.- 1: 27 Reading, in the county of Middlesex, and State of 211111 3 111 the fOIIU SllOWll 1n lgs. l and a shoulder, Massachusetts, have invented new and improved Guide- 111: 15 101111011 11I1011 1110101101' 0.1180 0f 1110 1110011 A, 1111011 Blocks for Window- Sash Cords; and I do hereby de- '115 1111101" 011117 111111 511011111015, 111, 010 10101011 1111011 1110 o lare' that the following is a full, clear,and exact de- 511105 3111 511111 11100115, 1111011 111011011101 011115, 11111011 511111 scription thereof, which win enable others v skilled in Shoulders ft age-mst @Qrresponflmg Shoulders fQrmed the art to make and use the saine, reference being had 1111011 1110. 1101101.11 211111 511105 0f 1110 5101111 1110 0051118 B, to the accompanying drawings, for-ming part of this 111 W111011 .511111 111011115 010 111110011 111 11,115 01150 1110 11100115 specification. A are inserted 1n the slots 1n the casing .13, and pushed Figure' l'is a vertical section of a portion of a win- 1111111111 11111111110 511011111015 112 1111011 111011' 511105 .5111110 dow-casing, taken through the line -x, iig'. 2, and show- 2180111151 1110 511011111015 1111011 1110 511105 0f 1.110 5101 111 1110 ingu, sideview of my improvedguidblock, casing. The blocks are then pressed downward until. Figure 2 is a horizontal sect-ion of a Aportion of a 1110 '511111111101511l 1111011 111011" 10W01 011805 '1111101111111 01 window-casing7 taken through the 1in@ y y, g 1, and the shoulder in the bottom of said slot. By this conshowing a, top View -Of my improved guidblock, struction, when said blocks are held down by the weight Figure 3 is the Same Section as fig, 17 ma showing of the sash and balancing-weight attached to the ends a modified form 0f the guideb10ek of the cords passed oyer said blocks, 1t 1s impossible Similar letters of reference indicate crt-responding 1211110111 1.0 1110110 111 0111101 11110011011, 01"'10 801 0111 0f parts. p ace. l A

My invention has for its object to furnish an im- 111 1110 101111 511011.11 111 11g.- 37 a1 511111110 1101011, 113, 15 proved MHPGOD grooved guidgbloek for Windowv formed 1n. the middle part or the lower edge of the said sash cords, which shall be simple in construction, inex- 11100111 11111011 1115 1111011 01 10118110 101111011 11l1011 1110 1101' pensive in manufacture, and e'ective in operation, and 10111 0f 1110 5101 111 1110 0051118 B: 5,0 111111 W11011 1110 511111 which is designed to take the place of the ordinary 11100115 1110 110111 11011111 by 1110 11018111 0f 1110 511511 111111 guide-pulleys. balancing-weight, they may be held securely in place. And it consists in the construction of the guidc- 11110101 1.110 001151111011011 11151 1105011110117 115 1101118 blocks, as hereinafter more fully described. 01111011151 0115Y 0f 001151100110111 011111 81111118 21 11111101' 51111- A :is my improved guide-block, which is semicircular P011 10 1110 10100115 in its general form, and the upper circular edge of I 01111111 'f1-5 110W 111111 1105110 10 5001110 by 11011015 which is grooved, to receive the sash-cord. Patent- The block A may be made of glass, porcelain, antir-1-11101111143110110118111011011 811111011100115 ,Aa 001151111111001 friction metal, or any other suitable material. When 51111510111111111Y 115 11010111 511011111 01111 110501111011 111011 15 10 made of porcelain, the glazing must be done Very care- 51151, 1111111 811101105 1111011 111011 501111011011101' 11111101 011805, fully, so as to leavethe surface of the groove entirely 1111111111111 511011111015 01' 110101105 1111011 0111101' 011101111111111 smooth, to prevent the .cord from being chafed when 511105 01111 1011101 01180: 011111011 111011 1011101' 011g0 0111.11, 115 sliding over it; but I prefer to make the blocksAof 011111' 101 1110 1111111050 501 101111- glass, as vbeing cheaper, and effecting better results. ALFRED BICKNELL.

The blocks A areset in slots in the casing B, in the Witnesses: same position in which the cord-pulleys are usually RUFUs S. GILMORE, 1 placed, and with their grooved and curved edges up- H. J. STOCKFORD.

ward. The blocks A are kept in place by shoulders 

